Friction top can



1 1,568,625 J 5 1926' D. P. ROBINSON FRICTION TOP CAN Filed April 26, 1921 J l I I II I .Z gwm'ntoo Patented J... s, 1926.

UNITED STATES 1,568,625 PATENT orncs.

DANIEL P. ROBINSON, OF BALTIMORE, MARYLAND, ASSIGNOB TO CONTINENTAL CAN COMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

FRICTION TOP CAN.

Application filed April 26,1921. Serial. No. 464,583.

To all whom it may concern:

Be it known that I, DANIEL P. ROBINSON, acitizen of the United States, residing at Baltimore, State of Maryland, have invented certain new and useful Improvements in Friction Top Cans, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful improvements in sheet metal cans, and more especially to what isknown in the trade as a friction top can. A i In the patent granted John C. Taliaferro,

February 9, 1915, No. 1,128,076, there isl rformedat the inner face of the wall of the shown and described a friction top can wherein the cover is secured to the can by three pairs of independent cooperating frictional walls.

The present invention is particularly directed to .a type of frictional top can such as shown .in this patent, and has for its obillustration one embodiment o On-'7 I ject to provide a construction wherein one pair of the frictional walls is brought into substantial alinement with the side wall of the can body, and the other pairs of frictional walls' are brought correspondingly close to the side wall of the can body so that the pressure incident to'the seating of the cover comes more nearly over the side wall of the can body. v a

A further 0 ject of the invention is to provide a friction top can of the above type wherein the central opening through which the contents of the can is removed or inserted is relatively large. Y

A still further object of the invention is to provide a construction wherein'the two outer frictional walls on the cover may be bodily moved toward and from the center of the cover without changing materially the shaping or construction of 'the friction walls. v

These andother objects will in part be obvious and will in part be hereinafter more fully disclosed. I

In the drawings which show; 13;

re 1 is a; verticalsectional view through a can embodying m improvements with the cover removed an raised slightly from the can top in order to better lllllS Fig. 2 is an enlarged way of e mvenview through a portion of a can body embodying m improvements with the cover fully seate in a can top.

In carrying out the invention, I have provided a sheet metal can which is preferably body. This can top is formed at the opening with a vertical frictional wall. 1 It is also can body with a frictional wall which is in contact with the inner wall of the can body and therefore substantially in alinement with the inner wall of the can body. Between the vertical wall at the centralopening and the wall which is substantially in line with the wall of the can body, there is a third vertical wall. The cover has a central depressed portion forming a friction wall which cooperates with t e friction wall at the opening in the can top. The cover also has a depending flange which is rolled to form friction walls cooperating respectively, with the other two friction walls in the top:

Referring more-in detail to the drawin s, my improved friction top can consists o a cylindrical can body 1 to which is secured a can end 2, said can end being connected to the can body 1 by a double seam 3. At the upper end of the cylindrical can bod 1 there is a can top 4 which is secured to t e vertical wall of the can body 1 by a double seam 5.

Said can bod 4 is provided'with a central openingfan at the opening, said can to has a depending vertical flange 6 which formed one of the friction walls for securing the cover. Said can coveris also providedwith a-depressed portion adjacent the inner wall of the can body 1 whichforms a vertical portion 7, the outer wall of which contacts with the inner wall of the body portion'l of the can. Intermediate the vertical portion 7 and the vertical portion 6 is a vertical'portion 8. The outer wall of the vertical' portion 8 and .the innerwall of the vertical rtion 7 form friction surfaces for engaging the cover. The cover is indicated at 9 in the drawings, and said cover is which provides a vertical portion 10, the outer wall of which is adapted to engage frictionally the inner wall of the portion 6. These two walls form one pair of friction walls for securing the cover to the can top. Said cover is in diameter substantially equal to the extreme outer diameter of the can. This cover is bent inwardly at 11 and thence downwardly to form the vertical portion 12. Said vertical portion 12 is rolled as indicated at 13 to form a portion'which is circular in cross section. The inner portion of the roll 13 makes contact with the outer wall of the vertical portion 8 and this makes a second pair of friction walls for holding the cover on the can top. The outer face of the roll 13 and the outer face of the vertical portion 12 make frictional contact with the inner face of the vertical portion 7, and this forms a third pair of friction contact surfaces for holding the cover on the can body.

It will be noted that this third pair of friction contact surfaces is substantially in alinement with the" vertical wall 1 of the can body. The other pairs of friction contact, walls are equally moved outwardly from the center of the can and brought nearer to a position which is in alinement with the.

vertical Wall 1' of the can body. This enables the pressure which is required in seat ing the cover to be more nearly over the vertical wall of the can body than in the prior Taliaferro patent referred to above and this greatly facilitates the seating of the cover in the can bod By the moving of the vertical frictionawalls outwardly as far as possible, I am able to increase the diameter of the central opening through which the contents of the can is removed.

Again, it will be noted that the roll 13 which carries two of the friction walls for the cover is mounted at the lower end of 21. depending vertical flange, and this roll may bodily shift toward the center of the can or outwardly from the center so as to bring the friction walls thereof into contact with the friction walls of the vertical portions 7 and 8 without changing or distorting in any way the friction walls on the cover. This enables the cover to more readily adapt itself to any inaccuracies in the forming of the friction walls on the can to and all three walls on the cover will rea ily aline themselves and make frictional engagement with the three friction walls on the can to Attention is called to the fact that t e portion 10 on the cover engages the portion 6 on the can top after the roll 13 has engaged the two friction walls on the can top and the outward pressure of the cover on the vertical portion 6 will cause the friction walls. 7 and 8 to more tightly grip the outer and inner portions of the roll 13.

It is obvious that minor changes in the i details of construction may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described the invention, what I claim as new and desire Letters Patent, is p 1. A friction top can consisting of a body portion, a top secured thereto, and a cover adapted to frictionally engage said top por-.

tion, said cover having a central depressed portion forming a substantially vertical frictional wall, and an outer depending portion rolled at its lower edge so as to form two separate spaced friction walls, said can top having an annular depression therein adjacent the vertical wall of the can body thus forming inner and outer substantially vertical frictional walls adapted to engage the friction walls formed by rolling of the" depending portion, the outer friction wall on the top being substantially in alinement with the vertical wall. of the can body, said top at its inner edge being curved downwardly to form a friction wall adapted to cooperate with the friction wall formed by the central depression in the cover.

2. A friction top can comprising a body portion, a top secured thereto and a cover,

said cover having a central depressed portion forming a substantially vertical fricment with the vertical wall of the can body adapted to engage the outer friction wall on the depending portion of the cover, said depression also forming a substantially vertical friction wall adapted to cooperate with the frictionwall at the inner face of the roll on the cover.

In testimony whereof, I afiix my signature;

' DANIELP. ROBINSON.

to secure by 

